Cyberchase"Snow Day to Be Exact"
(topic: Estimation) - Hacker steals the powerful sunisphere from Solaria, causing the cyberworld's sunny vacation paradise to be covered in snow! In a fun-filled chase across the snowy terrain, the kids discover the power and speed of estimation in order to recover the glowing orb from Buzz and Delete before the temperature reaches zero and the site freezes over forever. The Big Idea: Sometimes using a close answer is good enough for the problem you are solving. ~. D

4:00 pm

Fetch! With Ruff Ruffman"That Sculpture Isn't Yours, It's Mime"
Ruff learns that he's horrible at charades. To help him figure out how to act without making a sound, he sends Emmie and Marc to meet some mimes. Then he sends Jay and Rubye to learn how to make sculptures that move called kinetic sculptures. D

4:30 pm

Arthur"The Curse of the Grebes/Arthur Changes Gears"
The Curse of the Grebes: The Elwood City Grebes haven't won the Baseball Championship since 1918. But with the addition of three players - voiced by real-life Red Sox players Johnny Damon, Mike Timlin, and Edgar Renteria! - the title is finally within reach. There's one problem - whenever Buster is at the game, the Grebes lose! Is Buster the team's curse?! Or can the players convince Buster that his loyalty as a fan is more valuable to them than winning? Arthur Changes Gears: Arthur finally saves enough money to buy the bike of his dreams! Butà this new bike is way too nice to actually ride. D

5:00 pm

The Electric Company"Spooky Summer Soiree"
For the yearly Spooky Summer Soiree costume party, The Electric Company decides to dress up as animals dressed as monsters. Jessica and Marcus don't have their costumes yet, and Annie Scrambler, with the help of Gilda, has bought all of the costumes at the discount costume store. Marcus and Jessica hit the neighborhood sidewalk sales to find what they need while staying within their budget. D

5:30 pm

Nightly Business Report
The markets post best January gains since 1989. NBR's New York Correspondent Suzanne Pratt takes a look at why investors are jazzed about stocks. Plus, should investors be bullish on stocks? NBR's Susie Gharib speaks with Ariel Investments' John Rogers about what he is buying now. D

Need to Know
JEFF GREENFIELD ANCHORS. On the second of two inauguration specials examining the advocacy group "Common Good's" proposals to end bureaucratic gridlock and get the United States moving forward, Need to Know anchor Jeff Greenfield explores how malpractice lawsuits contribute to rising healthcare costs. Correspondent William Brangham travels to Denmark, where medical disputes are settled by experts without ever going to court. D

Shakespeare Uncovered"Macbeth with Ethan Hawke"
The actor seeks to play Shakespeare's murderous Thane of Cawdor by uncovering the true story that served as inspiration, immersing himself in some of the most memorable and innovative productions, as well as discovering Shakespeare's insights into the criminal mind.G

10:00 pm

Shakespeare Uncovered"The Comedies with Joely Richardson"
With her mother Vanessa Redgrave, Richardson investigates the legacy of Shakespeare's two cross-dressing comedies and the great comic and romantic heroines the playwright created in perennially popular plays.G